429 Rate Limit Error – Clarifying Idempotency Key Scope and Lifetime for LinkedIn Campaign Creation
When the LinkedIn Marketing API returns a 429 rate‑limit error or a transient 5xx response during campaign creation, clients must retry the request without creating duplicate campaign objects. The intended safe‑retry approach is to include an idempotency key so that a retried call maps to the existing resource instead of generating a new one. Public document
linkedin